6518448400 has 60 divisors (see below), whose sum is σ = 16341489792. Its totient is φ = 2494011520.

The previous prime is 6518448383. The next prime is 6518448413. The reversal of 6518448400 is 48448156.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 345064 + ... + 363463.

Almost surely, 2^6518448400 is an apocalyptic number.

It is an amenable number.

6518448400 is an abundant number, since it is smaller than the sum of its proper divisors (9823041392).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6518448400 is a wasteful number, since it uses less digits than its factorization.

6518448400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 708568 (or 708557 counting only the distinct ones).

The product of its (nonzero) digits is 122880, while the sum is 40.

The square root of 6518448400 is about 80736.9085363070. The cubic root of 6518448400 is about 1868.0195224068.

The spelling of 6518448400 in words is "six billion, five hundred eighteen million, four hundred forty-eight thousand, four hundred".